Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kien tre can snippets" » "kien tri can snippets", "kien trien can snippets", "kien truc can snippets", "kien tre dan snippets", "kien tiep can snippets", "kien tiem can snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("kien tre can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kien tre can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kien tre can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kien tre can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.